Liquid natural gas processing

a natural gas and processing technology, applied in the direction of liquefaction, cold treatment separation, lighting and heating apparatus, etc., to achieve the effect of reducing the overall energy and fuel requirements, avoiding the need for dehydration, and reducing the capital investmen

Active Publication Date: 2005-09-13
HOWE BAKER ENGINEERS LTD
View PDF16 Cites 55 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]As stated, our invention is directed to an improved process for the recovery of NGL from LNG which avoids the need for dehydration, the removal of acid gases and other impurities. A further advantage of our process is that it significantly reduces the overall energy and fuel requirements because the residue gas compression require

Problems solved by technology

Although there are many known processes, there is always a compromise bet

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid natural gas processing
  • Liquid natural gas processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012]Natural gas liquids (NGL) are recovered from low-pressure liquefied natural gas (LNG) without the need for external refrigeration or feed turboexpanders as used in prior processes. Referring to FIG. 1, process 100 shows the incoming LNG feed stream 1 enters pump 2 at very low pressures, typically in the range of 0-5 psig and at a temperature of less than −200° F. Pump 2 may be any pump design typically used for pumping LNG provided that it is capable of increasing the pressure of the LNG several hundred pounds to approximately 100-500 psig, preferably the process range of 300-350 psig. The resultant stream 3 from pump 2 is physically split into a first portion and a second portion forming streams 4 and 5 respectively, with a first portion (stream 5) preferably being 85-90% of stream 3 and the second portion (stream 4) preferably being 10-15% of stream 3. The split of stream 3 is necessary to the separation process because of the external reflux that stream 4 provides. The pref...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A process for the recovery of natural gas liquids (NGL) (ethane, ethylene, propane, propylene and heavier hydrocarbons) from liquefied natural gas (LNG) is disclosed. The LNG feed stream is split with at least one portion used as an external reflux, without prior treatment, to improve the separation and recovery of the natural gas liquids (NGL).

Description

FIELD OF THE INVENTION[0001]The present invention is directed toward the recovery of hydrocarbons heavier than methane from liquefied natural gas (LNG) and in particular to an improved process that uses a portion of the LNG as reflux in the separation process to aid in the recovery of the heavier than methane hydrocarbons.BACKGROUND OF THE INVENTION[0002]Natural gas typically contains up to 15 vol. % of hydrocarbons heavier than methane. Thus, natural gas is typically separated to provide a pipeline quality gaseous fraction and a less volatile liquid hydrocarbon fraction. These valuable natural gas liquids (NGL) are comprised of ethane, propane, butane, and minor amounts of other heavy hydrocarbons. In some circumstances, as an alternative to transportation in pipelines, natural gas at remote locations is liquefied and transported in special LNG tankers to appropriate LNG handling and storage terminals. The LNG can then be revaporized and used as a gaseous fuel in the same fashion a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F25J3/06F25J3/02
CPCF25J3/0214F25J3/0233F25J3/0238F25J3/0242F25J3/0615F25J3/0635F25J3/064F25J2200/02F25J2200/04F25J2205/02F25J2210/06F25J2215/62F25J2230/08F25J2230/60F25J2235/60F25J2245/90F25J2200/70F25J2200/74F25J2200/78
Inventor REDDICK, KENNETHBELHATECHE, NOUREDDINE
Owner HOWE BAKER ENGINEERS LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap